How do you run a bus on poop?

The UK’s first bus powered entirely by human and food waste has gone into service between Bristol and Bath…The 40-seat “Bio-Bus” runs on biomethane gas generated through the treatment of sewage and food waste.

The eco-friendly vehicle can travel up to 300km (186 miles) on one tank of gas, which takes the annual waste of about five people to produce.

It is run by tour operator Bath Bus Company and will shuttle people between Bristol Airport and Bath city centre.

The biomethane gas is generated at Bristol sewage treatment works in Avonmouth, which is run by GENeco, a subsidiary of Wessex Water.

GENeco general manager Mohammed Saddiq said: “Gas-powered vehicles have an important role to play in improving air quality in UK cities but the Bio-Bus goes further than that and is actually powered by people living in the local area, including quite possibly those on the bus itself…”

Har! Hold that thought.

Bath Bus Company’s Collin Field, said: “With so much attention being directed towards improving air quality generally, the public reaction to the appearance of this bus on a service between a world heritage city and an airport will further focus on the potential for this particular fuel…”

Bristol sewage treatment works processes around 75 million cubic metres of sewage waste and 35,000 tonnes of food waste each year.

A total of 17 million cubic metres of biomethane, enough to power 8,300 homes, is generated annually at the plant through a process known as anaerobic digestion.

Yes, it gives me the idea to harass the pols in town – in Santa Fe. The city was the first in the United States to institute buses running on compressed natural gas. Seems to me the easy bit would be conversion to bio-gas. OTOH, the city’s wastewater and sewage treatment facility seems incredibly inefficient. Might be an occasion for doing something bright with the process?

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